We've had a lot of queries over the past few days from users of the Websta service trying to find out why their widgets are not displaying on their websites anymore. It seems the Websta service has been discontinued and the widgets will no longer work. This is evident by the 503 error being returned from the webserver hosting these widgets.
Luckily, moving to SnapWidget and getting your Instagram photos displaying again is easy and we'd be happy to help you with that.
Let us know if you have any questions.